Evaluating frequency domain reflectometry as a tool for lithium-ion battery health prognosis

Asiedu-Asante, AB, Pickert, V, Mamlouk, M and Tsimenidis, C ORCID: https://orcid.org/0000-0003-2247-3397, 2024. Evaluating frequency domain reflectometry as a tool for lithium-ion battery health prognosis. Batteries, 10 (6): 185. ISSN 2313-0105

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Abstract

Monitoring battery aging is crucial for maintaining reliability and performance. This study investigates Frequency Domain Reflectometry (FDR) as a tool for monitoring lithium-ion battery State-of-Health (SoH). While FDR has been applied in battery research, the existing literature fails to address SoH assessment and lacks studies on larger battery samples to provide more meaningful results. In this work, nineteen cells initially underwent Electrochemical Impedance Spectroscopy (EIS) to assess their degradation levels during cyclic aging. This work evaluates FDR’s effectiveness in monitoring battery health indicators, such as capacity and equivalent series resistance (ESR), by correlating these with FDR-measured impedance between 300 kHz and 1 GHz. Analytical comparison between impedance measured before and after de-embedding processes were presented. The results show FDR reactance within 300 kHz–40 MHz correlates with EIS-measured ESR, suggesting its potential as a SoH indicator. However, reduced sensitivity and accuracy, particularly after de-embedding, may limit practical applicability. Additionally, resonance-based analysis was conducted to explore the relationship between changes in circuit resonance and cell dielectric permittivity. Despite having the lowest sensitivity, the method showed that the resonance frequencies of cells remain relatively constant, mirroring behaviours associated with changes in resistive properties. Overall, this study provides insights into FDR’s potential for battery diagnostics while highlighting avenues for future research to enhance effectiveness in real-world scenarios.

Item Type:	Journal article
Publication Title:	Batteries
Creators:	Asiedu-Asante, A.B., Pickert, V., Mamlouk, M. and Tsimenidis, C.
Publisher:	MDPI AG
Date:	28 May 2024
Volume:	10
Number:	6
ISSN:	2313-0105
Identifiers:	Number Type 10.3390/batteries10060185 DOI 2332743 Other
Rights:	© 2024 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Divisions:	Schools > School of Science and Technology
Record created by:	Laura Borcherds
Date Added:	08 Jan 2025 09:07
Last Modified:	08 Jan 2025 09:07
URI:	https://irep.ntu.ac.uk/id/eprint/52801

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